A Wheatstone bridge is used to determine the value of unknown resistance X by adjusting the variable resistance Y as shown in the figure. For the most precise measurement of X, the resistances P and Q
Held on 30 Apr 2022 · Verified 9 Jul 2026.
should be approximately equal and are small
should be very large and unequal
do not play any significant role
should be approximately equal to 2X
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